rule s for classification ships part 1 general regulations

RULES FOR CLASSIFICATION

Ships

Edition July 2021

Part 1 General regulations

Chapter 2 Class notations

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DNV AS

FOREWORD

DNV rules for classification contain procedural and technical requirements related to obtaining andretaining a class certificate. The rules represent all requirements adopted by the Society as basisfor classification.

© DNV AS July 2021

Any comments may be sent by e-mail to [email protected]

This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of thisdocument. The use of this document by other parties than DNV is at the user's sole risk. Unless otherwise stated in an applicable contract,or following from mandatory law, the liability of DNV AS, its parent companies and subsidiaries as well as their officers, directors andemployees (“DNV”) for proved loss or damage arising from or in connection with any act or omission of DNV, whether in contract or in tort(including negligence), shall be limited to direct losses and under any circumstance be limited to 300,000 USD.

CHANGES – CURRENT

This document supersedes the July 2020 edition of DNVGL-RU-SHIP Pt.1 Ch.2.

The numbering and/or title of items containing changes is highlighted in red.

Changes July 2021, entering into force 1 January 2022

Topic Reference Description

New ship type notation Sec.3 The following notation is new:

— Deck carrier.

New additional class notations Sec.4 The following notations are new:

— NAVI— Fuel ready— OR— Gas fuelled ammonia— Ready for C.

New qualifiers Sec.4 The following qualifiers are new:

— HMON(Nn)— HMON(Rn)— HMON(Vn)— COMF(Y-S)— COMF(Y-M)— COMF(NV)— Quiet(I-qrn)— Quiet(W-qrn).

Discontinued qualifiers Sec.4 The following qualifier has been discontinued:

— REGAS(ES)— Quiet(I[Ls,Lp,d,h])— Quiet(W[Ls,Lp,d,h])

Rebranding to DNV All This document has been revised due to the rebranding of DNVGL to DNV. The following have been updated: the companyname, material and certificate designations, and references toother documents in the DNV portfolio. Some of the documentsreferred to may not yet have been rebranded. If so, please seethe relevant DNV GL document.

Editorial correctionsIn addition to the above stated changes, editorial corrections may have been made.

Part 1 Chapter 2 Changes - current

Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021 Class notations

DNV AS

CONTENTS

Changes – current.................................................................................................. 3

Section 1 Class notations........................................................................................61 General................................................................................................ 61.1 Introduction..................................................................................... 6

Section 2 Construction symbol and main class notation......................................... 81 Construction symbols.......................................................................... 81.1 General........................................................................................... 8

2 Main class notation..............................................................................82.1 General........................................................................................... 8

Section 3 Ship type notations................................................................................. 91 Introduction.........................................................................................91.1 General........................................................................................... 9

2 Dry cargo ships................................................................................... 93 Container ships..................................................................................114 RO/RO ships...................................................................................... 115 Passenger ships.................................................................................126 Oil tankers......................................................................................... 127 Chemical tankers............................................................................... 158 Liquefied gas tankers........................................................................ 169 Compressed gas tankers....................................................................1810 Offshore service vessels.................................................................. 1811 Vessels for special operations......................................................... 1912 Non-self-propelled vessels...............................................................2413 Fishing vessels.................................................................................2514 Naval vessels................................................................................... 25

Section 4 Additional class notations..................................................................... 261 Introduction.......................................................................................261.1 General..........................................................................................26

2 Structural strength and integrity.......................................................263 Propulsion, power generation and auxiliary systems.........................334 Navigation and manoeuvring.............................................................395 Cargo operations............................................................................... 416 Equipment and design features......................................................... 467 Cold climate.......................................................................................54

Part 1 Chapter 2 Contents


DNV AS

8 Environmental protection and pollution control.................................589 Living and working conditions...........................................................6110 Survey arrangements.......................................................................6211 Naval................................................................................................6611.1 General........................................................................................66

12 Digital features................................................................................ 67

Section 5 Service area.......................................................................................... 691 Service area notation.........................................................................691.1 General..........................................................................................69

Section 6 Descriptive notation.............................................................................. 701 General.............................................................................................. 701.1 .................................................................................................... 701.2 .................................................................................................... 701.3 .................................................................................................... 701.4 .................................................................................................... 70

Changes – historic................................................................................................71

Part 1 Chapter 2 Contents


DNV AS

SECTION 1 CLASS NOTATIONS

1 General

1.1 Introduction

1.1.1 All vessels classed with the Society may be assigned

— construction symbol— main class notation— ship type notation— additional class notation— service area notation— descriptive notation

as applicable.

1.1.2 Class notations are assigned in order to determine applicable rule requirements for assignment andretention of class. Applicable class notations are given in Sec.2 to Sec.6.

1.1.3 Class notations are either mandatory or optional. The mandatory class notations are indicated in thetables given in Sec.2 to Sec.5.

1.1.4 In accordance with Ch.1 Sec.1 [2.2.5] optional class notations from the Society's other rule booksmay, upon special consideration, be assigned to a vessel complying with those rules.

1.1.5 Class notations may be given one or more qualifiers which are supplementary symbols used to identifyvariants of the class notation or a design parameter. Qualifiers typically denote differences in levels ofcomplexity and/or special requirements or limitations, and may be assigned additional requirements.Qualifiers follow immediately after a class notation and are indicated in parenthesis. Multiple qualifiers areseparated by comma and space.

1.1.6 Class notations and qualifiers are shown in bold. See Table 1 for examples of class notations andqualifiers.

1.1.7 The tables in Sec.2 to Sec.5 include the following information:

— name of class notation— indication of class notation being mandatory— reference to design requirements*— reference to survey requirements for fleet in service (FIS)*— qualifiers as relevant— purpose of class notation— application, giving additional information on when and/or where a class notation can be applied and/orunder what condition a class notation is mandatory.

* NA indicates no requirements.

Part 1 Chapter 2 Section 1


DNV AS

1.1.8 Examples of typical class notations are shown in Table 1.

Table 1 Examples of class notations

Example 1 Example 2 Example 3

Construction symbol (see Sec.2 [1])

Main class notation (see Sec.2 [2]) 1A 1A 1A

Ship type notations (see Sec.3) Container ship Tanker for oil Offshore servicevessel(AHTS)

Additional class notations (see Sec.4):

Related to structural strength and integrity CSR Strengthened(DK)

Related to propulsion, power generation andauxiliary systems E0 E0 E0

Related to navigation and manoeuvring NAUT(AW, INS+) NAUT(OSV)

Related to cargo operation RSCS+ Bow loading

Related to equipment and design features DG LFL HELDK(S, H) SF

Related to cold climate Ice(E) Ice(1A) Winterized

Related to environmental protection andpollution control Clean Clean(Design)

Related to survey arrangement BIS TMON ESP TMON



DNV AS

SECTION 2 CONSTRUCTION SYMBOL AND MAIN CLASS NOTATION

1 Construction symbols

1.1 General

1.1.1 The construction symbol will be assigned to vessels built under the supervision of the Society.

1.1.2 The construction symbol will be assigned to vessels built under the supervision of a classificationsociety recognized by the Society and later assigned class with the Society. For such vessels the classnotations which the Society considers to have the equivalent intent will be assigned.

1.1.3 Vessels other than those described in [1.1.1] and [1.1.2] will not be assigned a construction symbolwhen classed with the Society.

2 Main class notation

2.1 General

2.1.1 The main class notation 1A will be assigned to vessels with hull, machinery, systems and equipmentfound to be in compliance with applicable rule requirements as given in Pt.2, Pt.3 and Pt.4. Requirementsgiven by ship type notations and additional class notations may supersede the requirements given in Pt.2,Pt.3 and Pt.4. In such cases the main class notation 1A will still be assigned.

2.1.2 The main class notation 1A will also be assigned to vessels designed and constructed in accordancewith the rules of another classification society, and later assigned class with the Society.



DNV AS

SECTION 3 SHIP TYPE NOTATIONS

1 Introduction

1.1 General

1.1.1 Vessels that comply with requirements defined in Pt.5 may be given a ship type notation as indicatedin Table 1 to Table 13 of this section.

1.1.2 A vessel may be assigned more than one ship type notation provided that the respective requirementsare met.

1.1.3 Certain ship type notations are mandatory based on e.g.:

— type of cargo— number of passengers— the ability to execute special operations.

2 Dry cargo shipsTable 1 Ship type notations for dry cargo ships

Class notation Qualifier Purpose Application

General dry cargo shipMandatory:

yes

Design requirements:

Pt.5 Ch.1

FIS survey requirements:

Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

<None> Carriage of unitized and drybulk cargo

Mandatory for shipsoccasionally carryingdry cargo in bulk, unlessship type notation Multi-purpose dry cargo ship isassigned

Multi-purpose dry cargoship

Mandatory:

yes


Pt.5 Ch.1



<None> Carriage of unitized and drybulk cargo

Mandatory for shipsoccasionally carrying drycargo in bulk, unless shiptype notation General drycargo ship is assigned



DNV AS


Bulk carrier

Mandatory:

yes


Pt.5 Ch.1



<None> Carriage of dry bulk cargo

Mandatory for sea-goingsingle deck ships withcargo holds of singleand/or double side skinconstruction, with a doublebottom, hopper side tanksand top-wing tanks fittedbelow the upper deck, andintended for the carriage ofsolid bulk cargoes

Ore carrier

Mandatory:

yes


Pt.5 Ch.1



<None> Carriage of ore cargo in drybulk

Mandatory for sea-goingsingle deck ships havingtwo longitudinal bulkheadsand a double bottomthroughout the cargoregion, and intended forcarrying ore cargoes in thecentre hold only

X carrier

Mandatory:

yes


Pt.5 Ch.1



<None> Specialised for the carriageof a single type of dry bulk

Mandatory unless ship typenotation Bulk carrier is assigned. X denotestype of bulk cargo to becarried, limited to either,Woodchips, Cement, Flyash, or Sugar

Great lakes bulk carrier

Mandatory:

yes


Pt.5 Ch.1



<None> Carriage of dry bulk cargo

Designed to operate withinthe limits of the GreatLakes and St. Lawrenceriver to the seaward limitsdefined by the AnticostiIsland



DNV AS

3 Container shipsTable 2 Ship type notation for container ships


Container ship

Mandatory:

yes


Pt.5 Ch.2



<None> Carriage of containers

Ships primarily intended forthe carriage of containers.Carriage of break bulkon inner bottom may beaccepted in special cases.

4 RO/RO shipsTable 3 Ship type notations for RO/RO ships


RO/RO ship

Mandatory:

no


Pt.5 Ch.3



<None>Loading and unloading thecargo by roll on / roll off(RO/RO)

Car carrier

Mandatory:

no


Pt.5 Ch.3



<None> Carriage of vehicles



DNV AS

5 Passenger shipsTable 4 Ship type notations for passenger ships


Passenger ship

Mandatory:

yes


Pt.5 Ch.4


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

<None> Carriage of passenger More than 12 passengers

A Carriage of passengers andvehicles

More than 12 passengersand vehicles on encloseddecks

Ferry

Mandatory:

yes


Pt.5 Ch.4



B Carriage of passengers andvehicles

More than 12 passengersand vehicles on weatherdecks only. Requiresservice area restriction R2or stricter

6 Oil tankersTable 5 Ship type notations for oil tankers


Tanker for oil

Mandatory:

yes


Pt.5 Ch.5



<None> Carriage of oil in bulk For carriage of oil

Tanker for oil products

Mandatory:

yes


Pt.5 Ch.5



<None> Carriage of oil products inbulk

For carriage of all oilproducts except crude oil



DNV AS


Barge for oil

Mandatory:

yes


Pt.5 Ch.5,

Pt.5 Ch.11



<None> Carriage of oil in bulk For carriage of oil

Barge for oil products

Mandatory:

yes


Pt.5 Ch.5,

Pt.5 Ch.11



<None> Carriage of oil products inbulk

For carriage of all oilproducts except crude oil

Bulk carrier or tanker for oil

Mandatory:

yes


Pt.5 Ch.1

Pt.5 Ch.5



<None>Carriage of dry bulk cargoalternating with carriage ofoil

Combination carrier

Tanker for oil products withflashpoint above 60°C

Mandatory:

yes


Pt.5 Ch.5



<None>Carriage of all types of oilproducts with flashpointabove 60°C

For carriage of all types ofoil products with flashpointabove 60°C



DNV AS


Tanker for asphalt/bitumen

Mandatory:

yes


Pt.5 Ch.5

Pt.6 Ch.1 Sec.12



<None> Carriage of liquid asphalt/bitumen in bulk

For carriage of liquidasphalt/bitumen in bulk

Barge for oil products withflashpoint above 60°C

Mandatory:

yes


Pt.5 Ch.5,

Pt.5 Ch.11



<None>Carriage of all types of oilproducts with flashpointabove 60°C

For carriage of all types ofoil product with flashpointabove 60°C

Barge for asphalt/bitumen

Mandatory:

yes


Pt.5 Ch.5 and

Pt.5 Ch.11

Pt.6 Ch.1 Sec.12



<None> Carriage of liquid asphalt/bitumen in bulk

For carriage of liquidasphalt/bitumen in bulk

Bulk carrier or Tanker foroil products

Mandatory:

yes


Pt.5 Ch.1

Pt.5 Ch.5



<None>Carriage of dry bulk cargoalternating with carriage ofoil products

Combination carrierPart 1 Chapter 2 Section 3


DNV AS

7 Chemical tankersTable 6 Ship type notations for chemical tankers


Tanker for C

Mandatory:

yes


Pt.5 Ch.6



<None>

Carriage of specific type ofliquid chemical. C denotesthe type of cargo for whichthe ship is classed.

Chemical carriers accordingto the IBC or BHC code.Cargoes not requiring fullcompliance with Pt.5 Ch.6Sec.1 to Pt.5 Ch.6 Sec.17

Tanker for chemicals

Mandatory:

yes


Pt.5 Ch.6



<None> Carriage of chemicals

Chemical carriers withcargos listed in the IBCcode Ch.17 and Ch.18 withadditions given in IMOMEPC.2/Circ. XX List 1

Barge for chemicals

Mandatory:

yes


Pt.5 Ch.6

Pt.5 Ch.11



<None> Carriage of chemicals

Barge for chemicals withcargos listed in the IBCcode Ch.17 and Ch.18 withadditions given in IMOMEPC.2/Circ. XX List 1

Barge for C

Mandatory:

yes


Pt.5 Ch.6

Pt.5 Ch.11



<None>

Carriage of specific type ofliquid chemical. C denotesthe type of cargo for whichthe ship is classed.

Chemical carriers accordingto the IBC or BHC code.Cargoes not requiring fullcompliance with Pt.5 Ch.6Sec.1 to Pt.5 Ch.6 Sec.17



DNV AS


Tanker for chemicals withflashpoint above 60°C

Mandatory:

yes


Pt.5 Ch.6



<None>

Carriage of non-flammableliquid chemicals or liquidchemicals with flashpointabove 60°C and which arenot heated to within 15°C ormore of its flashpoint

Chemical carriers built incompliance with Pt.5 Ch.6Sec.1 [1.3.6] and Pt.5 Ch.6Sec.1 [1.3.7]

Barge for chemicals withflashpoint above 60°C

Mandatory:

yes


Pt.5 Ch.6

Pt.5 Ch.11



<None>

Carriage of non-flammableliquid chemicals or liquidchemicals with flashpointabove 60°C and which arenot heated to within 15°C ormore of its flashpoint

Barge for chemicals built incompliance with Pt.5 Ch.6Sec.1 [1.3.6] and Pt.5 Ch.6Sec.1 [1.3.7]

8 Liquefied gas tankersTable 7 Ship type notation for liquefied gas tankers


Tanker for liquefied gas

Mandatory:

yes


Pt.5 Ch.7



<None> Carriage of liquefied gas

Tanker for C

Mandatory:

yes


Pt.5 Ch.7



<None>

Carriage of specific type ofliquified gas. C denotes thetype of cargo for which theship is classed

Tanker for C will beconsidered in each case,depending on the nature ofthe cargo to be carried.Mandatory for shipsdedicated for transport ofspecific product(s) as inPt.5 Ch.7 Sec.19



DNV AS


Barge for liquefied gas

Mandatory:

yes


Pt.5 Ch.7

Pt.5 Ch.11



<None> Carriage of liquefied gas

Barge for C

Mandatory:

yes


Pt.5 Ch.7

Pt.5 Ch.11



<None>

Carriage of specific type ofliquified gas. C denotes thetype of cargo for which theship is classed

Barge for C will beconsidered in each case,depending on the nature ofthe cargo to be carried.Mandatory for shipsdedicated for transport ofspecific product(s) as inPt.5 Ch.7 Sec.19

FSU for liquefied gas

Mandatory:

yes


Pt.5 Ch.7 Sec.25



<None>Floating storage unit forliquefied gas to be operatedat a fixed location.

Mandatory for floatingstorage units dedicatedfor storage of productsgiven in Pt.5 Ch.7 Sec.19.Not applicable for unitsdesigned for transportationof liquefied gas.

FSU for C

Mandatory:

yes


Pt.5 Ch.7 Sec.25



<None>

Floating storage unit ofliquefied gas to be operatedat a fixed location, where Cindicates the name or groupof product(s) for which theFSU is classified for storage.

Mandatory for floatingstorage units of specificproduct(s) as given in Pt.5Ch.7 Sec.19. Not applicablefor units designed fortransportation of liquefiedgas.



DNV AS

9 Compressed gas tankersTable 8 Ship type notation for compressed gas tankers


Tanker for compressednatural gas

Mandatory:

yes


Pt.5 Ch.8



<None> Carriage of compressednatural gas

10 Offshore service vesselsTable 9 Ship type notations for offshore service vessels


<None>For vessels providingservices for offshoreinstallations

+ For services in harshweather conditions

Anchor handlingTowing of floating objectsand handling of anchoringequipment

Towing Towing floating objects inopen waters

AHTS

Towing of floating objects,handling of anchoringequipment, and platformsupply services

Compliance with qualifiersAnchor handling andTowing and the additionalclass notation Platformsupply

Offshore service vessel

Mandatory:

no


Pt.5 Ch.9

Pt.6 Ch.5 Sec.15


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7Ch.1 Sec.6 [29]

Windfarm maintenance Maintenance and service ofoffshore wind farms



DNV AS


<None> Rescue operations andstandby services

Standby vessel

Mandatory:

no


Pt.5 Ch.9



S

Rescue operations andstandby services in harshweather conditions, e.g. theNorth Sea

11 Vessels for special operationsTable 10 Ship type notations for vessels for special operations


Crane vessel

Mandatory:

no


Pt.5 Ch.10 Sec.2


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4, Pt.7Ch.1 Sec.6 [6]

<None> Crane operations

Cable laying vessel

Mandatory:

no


Pt.5 Ch.10 Sec.3



<None> Cable laying

Pipe laying vessel

Mandatory:

no


Pt.5 Ch.10 Sec.4



<None> Pipe laying



DNV AS


Semi–submersible heavytransport vessel

Mandatory:

yes


Pt.5 Ch.10 Sec.5



<None> Carriage of heavy unitizeddry cargo

Designed to load andunload deck cargo bytemporarily submerging itscargo deck through ballastoperations

SAT

Equipped with a saturationdiving system classified bythe Society in compliancewith DNV-RU-OU-0375Diving systems

Surface

Equipped with a surfacediving system classified bythe Society in compliancewith DNV-RU-OU-0375Diving systems

Ready

Vessel prepared forinstallation of divingsystem with the supportedinterfaces listed in theappendix of class

DSV

Mandatory:

no


Pt.5 Ch.10 Sec.6



OCSIACS classed saturationdiving system installed asper Pt.5 Ch.10 Sec.6 [1.8]

<None> Seismographic research Requirements to hullarrangement and strength

Seismic vessel

Mandatory:

no


Pt.5 Ch.10 Sec.7



A Seismographic research Requirements to systemsand equipment

Well stimulation vessel

Mandatory:

no


Pt.5 Ch.10 Sec.8



<None> Well stimulation



DNV AS


<None> Fire fighting

I

Fire fighting with activeprotection, giving it thecapability to withstandhigher heat radiation loadsfrom external fires

I+

Fire fighting with active andpassive protection, giving itthe capability to withstandthe higher heat radiationloads also when the activeprotection fails. In addition,the vessel incorporates alonger throw length

IIContinuous fire fighting oflarge fires and cooling ofstructures.

May be assigned incombination with Firefighter (I)

III

Continuous fire fighting oflarge fires and cooling ofstructures with larger waterpumping capacity and morecomprehensive fire fightingequipment than for II.

May be assigned incombination with Firefighter (I)

Fire fighter

Mandatory:

no


Pt.5 Ch.10 Sec.9



Capability Fire fighting capability

Vessels not specifically builtfor fire fighting purposesbut having fire fightingcapabilities in addition totheir regular service

Icebreaker

Mandatory:

no


Pt.5 Ch.10 Sec.10



<None> Ice breaking

Tug

Mandatory:

no


Pt.5 Ch.10 Sec.11


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4, Pt.7Ch.1 Sec.6 [29] and Pt.7 Ch.1Sec.6 [29]

<None> Towing of other vessels bytowlines



DNV AS


F

Steering and manoeuvringoperations of other vesselsby towlines

Escort rating numbers basedon full scale test

N


Escort rating numbers basedon numerical calculations

O


Escort rating numbersestablished by anotherclassification society

One of the qualifiers F, Nor O is mandatory

Only one of the qualifiers F,N or O may be assigned

Escort tug

Mandatory:

no


Pt.5 Ch.10 Sec.11


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4, Pt.7Ch.1 Sec.6 [29] and Pt.7 Ch.1Sec.6 [29]

(FS, t, v)

(FS, t, v) are escort ratingnumbers, where:

FS indicates maximumtransverse steering pull inton, exerted by the escorttug on the stern of theassisted vessel

t is the time in secondsrequired for the change ofthe tug's position from oneside to the correspondingopposite side

v is the speed in knotsat which this pull may beattained

Mandatory qualifier

Maximum two sets ofescort rating numbers maybe assigned

For escort tugs with thequalifier O, the escortrating number values arereplaced by '-'

<None> DredgingDredger

Mandatory:

no


Pt.5 Ch.10 Sec.12



Suction Suction dredging



DNV AS


Pusher

Mandatory:

no


Pt.5 Ch.10 Sec.13



<None> Pushing

Slop reception vessel

Mandatory:

no


Pt.5 Ch.10 Sec.14



<None>Floating facilities forreception and processing ofoily water and oil residue

Reefer

Mandatory:

no


Pt.5 Ch.10 Sec.15


Pt.7 Ch.1 Sec.6 [4]

<None>

Carriage of refrigerateddry cargo and fruit andvegetables under controlledatmosphere

Refrigerated fruit juicecarrier

Mandatory:

yes


Pt.5 Ch.10 Sec.15


Pt.7 Ch.1 Sec.6 [4]

<None>Carriage of refrigerated fruitjuices and similar liquidcargoes in bulk

Tanker for potable water

Mandatory:

no


Pt.5 Ch.10 Sec.16



<None> Carriage of potable water inbulk.



DNV AS


Deck carrier

Mandatory:

no


Pt.5 Ch.10 Sec.17



<None>Vessels specially intendedfor carrying cargo on deckonly, without a cargo hold.

12 Non-self-propelled vesselsTable 11 Ship type notations for non-self-propelled vessels


<None> Vessels with cargo hold

Hopper

Vessels for dredgingoperations with self-unloading through thebottom

Barge

Mandatory:

yes


Pt.5 Ch.11


Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1Sec.4

Concrete Vessels made of concreteand with cargo hold

No means of self-propulsion for transit

<None>Vessels specifically intendedfor carriage of cargo on deckonly

Pontoon

Mandatory:

yes


Pt.5 Ch.11



B

Unmanned vessels ofsimple box shape intendedfor carriage of on-deckcargo or used as workingplatform within restrictedenvironmental conditions

No means of self-propulsion for transit



DNV AS

13 Fishing vesselsTable 12 Ship type notations for fishing vessels


<None> Fishing

SArranged for carriage of fishin bulk, with shifting boardsin cargo holds

Fishing vessel

Mandatory:

no


Pt.5 Ch.12



N

Fishing vessel complyingwith the requirements ofthe Norwegian MaritimeDirectorate (NMD)

<None> Fishing Stern trawling

SArranged for carriage of fishin bulk, with shifting boardsin cargo holds

Stern trawler

Mandatory:

no


Pt.5 Ch.12



N

Fishing vessel complyingwith the requirements ofthe Norwegian MaritimeDirectorate (NMD)

14 Naval vesselsTable 13 Ship type notations for naval and naval support vessels


Naval

Mandatory:

yes


Pt.5 Ch.13


DNV-RU-NAV Pt.7 Ch.1

<None> Naval operationsNaval flagged vessels andadministered by a nationalnaval administration

Naval landing craft

Mandatory:

yes


DNV-RU-HSLC Pt.5 Ch.8



<None>

For vessels intended tocarry troops, vehicles andequipment combined withbeach landing operations

Naval flagged vessels andadministered by a nationalnaval administration

Lpp < 40 m



DNV AS

SECTION 4 ADDITIONAL CLASS NOTATIONS

1 Introduction

1.1 General

1.1.1 Vessels that comply with the requirements provided in Pt.6 may be assigned corresponding additionalclass notation as indicated in Table 1 to Table 10 of this section.

1.1.2 Certain additional class notations are mandatory for certain types of installation, features, orequipment installed; (e.g. Bow loading, Battery(Power), Inert) where the Society has found that theseconstitute possible hazards to personnel and/or the vessel. Mandatory additional class notations are indicatedin the tables referred below.Additional class notations made mandatory for different ship types are also referred in Pt.5.

2 Structural strength and integrityTable 1 Additional class notations related to structural strength and integrity


1-X

Strengthened inner bottomfor grab loading andunloading with grab mass X≥ 10 t.

Mandatory for ships withfreeboard length LLL > 150m and carrying solid bulkcargoes having a density ≥1.0 t/m3.

Voluntary for other ships.

2-X

Strengthened inner bottom,and lower part of transversebulkhead and longitudinalbulkhead for grab loadingand unloading with grabmass X ≥ 10 t.

Cargo holds unloaded withgrab and where additionalprotection of lower part oftransverse bulkhead andlongitudinal bulkhead isfound necessary.

Grab

Mandatory:

yes


Pt.6 Ch.1 Sec.1


NA

3-X

Strengthened inner bottom,and lower part of transversebulkhead and longitudinalbulkhead for grab loadingand unloading with grabmass X ≥ 20 t.

Mandatory for Ore carrierwith class notation OC(M)or OC(H).

Mandatory for ships withclass notation HC(A),HC(B)or HC(B*).

Voluntary for other ships.

HAWeather deck hatch coversstrengthened for heavycargo.

DK Weather deck strengthenedfor heavy cargo.

Strengthened

Mandatory:

no


Pt.6 Ch.1 Sec.2


NAIB Inner bottom strengthened

for heavy cargo.



DNV AS


HL

Mandatory:

no


Pt.6 Ch.1 Sec.3


NA

ρ

Tanks or holds strengthenedfor heavy liquid, whereρ denotes the maximumdensity in t/m3 in specifiedcargo tanks.

A

Strengthened to carry drybulk cargoes of density ≥1.0 t/m3 with specified holdsempty at scantling draught,in addition to HC(B).

B

Strengthened to carry drybulk cargoes of density≥ 1.0 t/m3 with all holdsloaded, in addition toHC(C).

B*

Strengthened to carry drybulk cargoes of density≥ 1.0 t/m3 with any holdempty at scantling draught.

CStrengthened to carry drybulk cargoes of density <1.0 t/m3.

HC

Mandatory:

yes


Pt.6 Ch.1 Sec.4


NA

MDesigned to carry dry bulkcargoes as described in theloading manual.

HC with one of thequalifiers A, B, B*, C or Mare mandatory for:

— General dry cargoship designed forcarriage of solid bulkcargoes, with L ≥ 150m, having minimum fivecargo holds

— Multi-purpose drycargo ship designedfor carriage of solid bulkcargoes, with L ≥ 150m, having minimum fivecargo holds

— Bulk carrier withoutCSR notation, with L ≥150 m.

Maximum cargo density

Mandatory:

yes


Pt.6 Ch.1 Sec.4 and DNV-RU-SHIP-CSR Sec.1


NA

ρ Designed for a maximumcargo density ρ in t/m3.

Mandatory for ships withclass notation BC(A),BC(B), HC(A), HC(B) orHC(B*) designed for amaximum cargo density <3.0 t/m3.

No MP

Mandatory:

no




NA

<None>Ships not designed forloading and unloading inmultiple ports.

May be applied to shipswith class notation BC(A),BC(B), BC(C), HC(A),HC(B) or HC(C).



DNV AS


Block loading

Mandatory:

no



FIS requirements:

NA

<None> Ships intended to operate inalternate block condition.

May be applied to shipswith class notation BC(A)or HC(A).

M

Strengthened for loadingand unloading in multipleports, in addition to OC(H)notation.

Mandatory for ships withclass notation Ore carrierwith L ≥ 150 m, unlessOC(H) is assigned.

OC

Mandatory:

yes


Pt.6 Ch.1 Sec.5

FIS requirements:

NA

H

Designed to carry orecargoes in seagoinghomogeneous loadingconditions.

Mandatory for ships withclass notation Ore carrierwith L ≥ 150 m, unlessOC(M) is assigned.

Holds n may be empty

Mandatory:

yes


Pt.6 Ch.1 Sec.4, and DNV-RU-SHIP-CSR Sec.1


NA

<None>

Holds may be empty atmaximum draught where nis the identification numberfor each hold that may beempty.

Mandatory for ships withclass notation BC(A),HC(A), HC(M), if alternateloading conditions areincluded in the loadingmanual.

Plus

Mandatory:

no


Pt.6 Ch.1 Sec.6


NA

<None>Extended scope of fatiguestrength assessment for hullstructural details.

1

Fatigue strength control inaccordance with CSA(FLS1)and ultimate strengthcheck based on direct loadcalculations.

2

Fatigue strength control inaccordance with CSA(FLS2)and ultimate strengthcheck based on direct loadcalculations.

CSA

Mandatory:

no


Pt.6 Ch.1 Sec.7

FIS requirements:

NA

FLS1Fatigue strength controlbased on direct loadcalculations.



DNV AS


FLS2

Additional fatigue strengthcontrol based on directload calculations withincreased scope compared toCSA(FLS1).

<None>

Structural strengthverification by meansof global finite elementassessments (FEA) for 25years worldwide operation.

X

Structural strengthverification by means ofglobal FEA for a designoperation time X in years >25 for worldwide operation.

Mandatory for vessels withclass notation Containership having one of thefollowing characteristics:

— novel design— complex structural

arrangement— L ≥ 290 m— B ≥ 47 m— v ≥ 25 kn— hatch coaming built of

NV D47 or NV E47 steelgrades.

Optional for ships withclass notation Containership not having thecharacteristics above.

Optional for ships withclass notation Generaldry cargo ship or Multi-purpose dry cargo ship.

NAS, X

Structural strengthverification by means ofglobal FEA for specific NorthAtlantic service NAS and fora design operation time X inyears ≥ 25.

RSD

Mandatory:

yes


Pt.6 Ch.1 Sec.8

FIS requirements:

NA

SFA, X

Additional assessmentfor highly utilized hatchcorners applying a moresophisticated spectralfatigue analysis for a designoperation time X in years ≥25.

Optional for ships withclass notation Containership.



DNV AS


BDedicated seawater ballasttanks of all types ofvessels.

CCargo oil tanks of crudeoil tankers (corrosionprotection by coating).

CA

Cargo oil tanks of crudeoil tankers (corrosionprotection by alternativemeans).

D Double side-skin spaces ofbulk carriers.

COAT-PSPC

Mandatory:

no


Pt.6 Ch.1 Sec.9


Pt.7 Ch.1 Sec.3

V

Additional requirementsfor corrosion prevention oftanks and spaces/areas fornewbuildings. The notationprovides compliance withSOLAS Ch.II-1 Pt.A-1,Reg. 3-2 and IMO Res.MSC.215(82), SOLASCh.II-1, Reg. 3-11 and IMORes. MSC.288(87).

Void spaces of bulk carriersand oil tankers.

COLL

Mandatory:

no


Pt.6 Ch.1 Sec.10


NA

XHull side structures speciallyevaluated for collisionimpacts.

The qualifier X shall be anintegral number between1 and 6 and denotes theamount of strengthening ofthe side structures againstcollisions.

WIV

Mandatory:

no


Pt.6 Ch.1 Sec.11


NA

<None>

Fatigue and ultimate hullgirder strength verifiedunder explicit considerationof wave induced vibrations(whipping and springing).

Container ship

Hot

Mandatory:

yes


Pt.6 Ch.1 Sec.12


NA

TC

Cargo tanks designed forhigh temperature cargo witha maximum design cargotemperature of TC in °C.

Mandatory for ships withnotation Tanker forasphalt/bitumen andother oil tankers intendedfor the carriage of liquidcargo at a temperaturehigher than 100°C atatmospheric pressure.

NAABSA

Mandatory:

no


Pt.6 Ch.1 Sec.13 [3]

FIS requirements:

NA

<None>Structural strength ofbottom structure is verifiedto allow for resting aground

May be applied to shipswith L ≤ 90 m anddesigned with a flatbottom.



DNV AS


35Application of steel gradeHD35 in accordance withPt.2 Ch.2 Sec.2 [10].

HDS

Mandatory:

no


Pt.6 Ch.1 Sec.14

FIS requirements:

NA

50

Improved collision behaviourwithin the cargo hold regionby using higher ductilitysteels.

Application of steel gradeHD50 in accordance withPt.2 Ch.2 Sec.2 [10].

Guidance note:L is the rule length as defined in Pt.3 Ch.1 Sec.4.

---e-n-d---o-f---g-u-i-d-a-n-c-e---n-o-t-e---

Table 2 Additional class notations related to vessels in accordance with IACS common structuralrules only


CSR

Mandatory:

yes


DNV-RU-SHIP-CSR Sec.1



<None>Vessel designed and builtaccording to IACS commonstructural rules.

Mandatory for:

Bulk carrier with L ≥ 90m and cross section inaccordance with CSR Pt.1Ch.1 Sec.1 [1.2.1]

Tanker for oil, Tankerfor oil products,

with L ≥ 150 m.

A

Strengthened to carry drybulk cargoes of density ≥1.0 t/m3 with specified holdsempty at scantling draught,in addition to BC(B).

Mandatory for shipswith class notation Bulkcarrier with L ≥ 150 m,unless BC(B) or BC(C) isassigned.

B

Strengthened to carry drybulk cargoes of density≥ 1.0 t/m3 with all holdsloaded, in addition to BC(C).

Mandatory for shipswith class notation Bulkcarrier with L ≥ 150 m,unless BC(A) or BC(C) isassigned.

BC

Mandatory:

yes




NA

CStrengthened to carry drybulk cargoes of density <1.0 t/m3.

Mandatory for shipswith class notation Bulkcarrier with L ≥ 150 m,unless BC(A) or BC(B) isassigned.



DNV AS


Grab

Mandatory:

yes




NA

XStrengthened for grabloading and discharging withgrab mass X ≥ 20 t.

Mandatory for ships withclass notation BC(A) or BC(B).



DNV AS

3 Propulsion, power generation and auxiliary systemsTable 3 Additional class notations related to propulsion, power generation and auxiliary systems


PowerFor vessels where the EESpower is used for electricalpropulsion of the vessel.

— All-electric vessel, i.e.all main sources ofpower are based onEES.

— Hybrid vessel whereone of the main sourcesof power is based onEES.

— Hybrid vessel having anoperational mode wherethe vessel is operatingon EES power only, withthe other main sourceof power in standby.

— Hybrid vessel usingthe EES system as aredundant source ofpower for main and/or additional classnotations, e.g. dynamicpositioning.

Battery

Mandatory:

yes


Pt.6 Ch.2 Sec.1



Safety

For vessels where theaggregated EES installationin one EES space has anrated capacity of 20 kWh orabove and not having theBattery(Power) notation.

— Hybrid vessels not usingthe EES power as amain source of power.

— Hybrid vessels usingthe EES power for onlypeak shaving and/orload levelling.

— Vessels using EESpower solely whenmoored.

E0

Mandatory:

no


Pt.6 Ch.2 Sec.2


Pt.7 Ch.1 Sec.6 [24]

<None> Unattended machineryspace.



DNV AS


ECO

Mandatory:

no


Pt.6 Ch.2 Sec.2


Pt.7 Ch.1 Sec.6 [24]

<None>Centralised

operated machinery.

Power Fuel cell installations.

Mandatory where thefuel cell power is used foressential, important oremergency services.

FC

Mandatory:

yes


Pt.6 Ch.2 Sec.3



Safety

Fuel cell installations wherethe fuel cell power is notused for essential, importantor emergency users.

Mandatory where the fuelused is a gas or a liquidfuel with flash point below60°C.

Fuel

Mandatory:

no


Pt.6 Ch.2 Sec.4


Pt.7 Ch.1 Sec.6

ⱱ, ρ, T

Fuel treatment andconditioning system, whereⱱ is maximum viscosity incSt at 50°C, ρ is maximumdensity in kg/m3 of thefuel oil at 15°C, and Tis minimum outside airtemperature in °C forwhich the installations areapproved.

Gas fuelled LNG

Mandatory:

yes


Pt.6 Ch.2 Sec.5



<None> LNG fuelled engineinstallations. Mandatory when installed.

Ammonia

LFL

LNG

Fuel ready

Mandatory:

no


Pt.6 Ch.2 Sec.8


NA

LPG

Ships designed for futureconversion to an alternativefuel

Minimum one of the fuelspecific qualifiers aremandatory.



DNV AS


LFL fuelled

Mandatory:

yes


Pt.6 Ch.2 Sec.6



<None> Low flashpoint liquid fuelledengine installations. Mandatory when installed.

1

Main and alternativepropulsion is provided by acommon propulsion system(one propeller, one shaftand one rudder/steeringgear) with redundant primemovers or two or morepropellers.

2

Propulsion and steering areof a redundant design withtwo (or more) propellers inparallel operation.

3

Propulsion and steering areof a redundant design withtwo (or more) propellersin parallel operation andseparated by watertightA-60 bulkheads.

x

% of the propulsion powerand where relevant,associated steering system,can be restored andmaintained after singlefailure.

Mandatory for RP(1),RP(2), and RP(3).

RP

Mandatory:

no


Pt.6 Ch.2 Sec.7


NA

+

Propulsion power andsteering capacity ismaintained withoutdisruption upon any singlefailure.

D Ready for installation of adry scrubber system.

C Ready for installation of awet closed scrubber system.

H Ready for installation of awet hybrid scrubber system.

Scrubber ready

Mandatory:

no


Pt.6 Ch.2 Sec.9


NAO Ready for installation of a

wet open scrubber system.

Mandatory, mutuallyexclusive qualifiers.



DNV AS


IL

Ready for in-line installationof scrubber system with oneindividual linear scrubberunit per consumer.

MI

Ready for installation ofscrubber system withmultiple inlets to one ormore scrubber units.

Mandatory, mutuallyexclusive qualifiers.

HS

Structural supports and shipstructures are prepared forinstallation of a scrubbersystem at newbuildingstage.

R

Review of the futurescrubber installation systemfor compliance according torelevant class rules.

Complete review accordingto main class rules.Includes piping andelectrical systems. Controland monitoring verificationis limited.

MISC

An agreed number ofsystems and or componentsare included fromnewbuilding stage andfollowed up by the Societythroughout the new buildingprocess.

Certification and installationof parts of the scrubbersystems before deliverybased on agreementbetween owner and yard,with detailed list providedto Society for acceptance.

S

The future scrubberinstallation complies withMarpol annex 6 regulation 4and 14, and MEPC.259(68).

If the Society is authorizedby the flag administrationto issue the IAPPcertificate. Reviewaccording to IMO resolutionMEPC.259(68).

1

Intended for propulsionsystems installed on vesselswith conventional hull formsand incorporates enhancedaft bearing performanceduring normal and turningoperating conditions.

Shaft align

Mandatory:

no


Pt.6 Ch.2 Sec.10


Pt.7 Ch.1 Sec.6 [31]

2

Intended for propulsionsystems requiring additionalcalculations to estimatehydrodynamic propellerloads during turningconditions. Typicalinstallations are vessels withnon-conventional hull formssuch as asymmetric stern,twin skeg, etc.



DNV AS


SRTPMandatory:

yes


Pt.6 Ch.2 Sec.11


NA

<None>

Increased safety level ofpassenger ships throughmore redundant systemarrangements, providingincreased robustness andfault tolerance.

Mandatory for passengersships, SPS ships and navalvessels in accordance withPt.6 Ch.2 Sec.11 [1.4].

WAPSMandatory:

no


Pt.6 Ch.2 Sec.12


NA

<None>Wind assisted propulsionsystems installed onseagoing ships.

Gas fuelled LPGMandatory:

yes


Pt.6 Ch.2 Sec.13



<None> LPG fuelled engineinstallations. Mandatory when installed.

Gas fuelled ammoniaMandatory:

yes


Pt.6 Ch.2 Sec.14



<None> Ammonia fuelled engineinstallations. Mandatory when installed.

ER1Enhanced reliability ofpropulsion, steering andelectrical power

ER2

Enhanced reliability ofpropulsion, steering andelectrical power withadditional redundancy

EMR1 Enhanced manoeuvringreliability

ORMandatory:

yes


Pt.6 Ch.2 Sec.15



EMR2Enhanced manoeuvringreliability with enhancedredundancy

ER2 is mandatory forEMR2.



DNV AS


OP

Operational flexibility andpredictability throughenhanced redundancy andcapacity in auxiliary systemsfor propulsion, steering andelectrical power



DNV AS

4 Navigation and manoeuvringTable 4 Additional class notations related to navigation and manoeuvring


AUTS Dynamic positioning systemwith no redundancy.

Includes single DP controlsystem and manual leverscontrol back-up.

AUT

Dynamic positioning systemwith no redundancy.Provides higher availabilityand robustness compared toDPS(1).

Includes single DP controlsystem, single joystickcontrol system and manuallevers control back-up.

AUTR

Dynamic positioning systemwith redundancy in technicaldesign. Provides higheravailability and robustnesscompared to DPS(2).

Includes redundant DPcontrol system, singlejoystick control system andmanual levers control back-up.

AUTRO

Dynamic positioning systemwith redundancy andseparation in technicaldesign. Provides higheravailability and robustnesscompared to DPS(3).

Includes redundant DPcontrol system, singlejoystick control system andmanual levers control back-up. In addition a singleDP control system in aseparated back-up controlspace.

E

Dynamic positioning systemwith enhanced reliability.Position and heading keepingability meets intentionscomparable to or exceedingDPS(2).

Includes redundant DPcontrol system and singleindependent alternative DPcontrol system and manuallevers control back-up.

Provides flexibility andincreased availability ofpower and thrust by use ofconnected power systems,standby start and change-over of generator sets andthrusters.

ER

Dynamic positioning systemwith enhanced reliability.Position and heading keepingability meets intentionscomparable to or DPS(2)and DPS(3) (depending onwhich failure mode beingevaluated).

Includes, in addition to theproperties of qualifier E,fire resistant separationbetween redundancygroups, which in additionis watertight below maindeck.

DYNPOS

Mandatory:

no




Pt.7 Ch.1 Sec.6 [12]

AAnnual survey to be carriedout in accordance with scopefor renewal survey.

In combination withqualifiers AUTR, AUTRO,E, ER.



DNV AS


1

Dynamic positioningsystem with no redundancycorresponding to IMOguideline IMO MSC/Circ.645Guidelines for vessels withdynamic positioning systemsDP equipment class 1.

Includes single DP controlsystem, single joystickcontrol system and manuallevers control back-up.

2

Dynamic positioning systemwith redundancy in technicaldesign corresponding to IMOguideline IMO MSC/Circ.645Guidelines for vessels withdynamic positioning systemsDP equipment class 2.

Includes redundant DPcontrol system, singlejoystick control system andmanual levers control back-up.

3

Dynamic positioning systemwith redundancy andseparation in technicaldesign corresponding to IMOguideline IMO MSC/Circ.645Guidelines for vessels withdynamic positioning systemsDP equipment class 3.

Includes redundant DPcontrol system, singlejoystick control system andmanual levers control back-up. In addition a singleDP control system in aseparated back-up controlspace.

DPS

Mandatory:

no


Pt.6 Ch.3 Sec.1


Pt.7 Ch.1 Sec.6 [12]

AAnnual survey to be carriedout in accordance with scopefor renewal survey.

In combination withqualifiers 2 and 3.

NAV Basic requirements.

OCEnhanced requirementsfor vessels operating worldwide.

AWEnhanced requirements forvessels operating in coastaland narrow waters.

OSV

Requirements withinbridge design, bridgeinstrumentation andworkstation arrangements.Vessels with NAUT willcomply with the principlesand aims of SOLAS V/15 andIMO MSC/Circ.982. Vessels operating as

service vessels for offshoreindustry.

NAUT

Mandatory:

no


Pt.6 Ch.3


Pt.7 Ch.1 Sec.6 [13]

INS+

Enhanced multi functionalworkstation arrangementfor integrated navigationalsystems.

Vessels with class notationNAUT.

NAVI

Mandatory:

no


Pt.6 Ch.3 Sec.6


Pt.7 Ch.1 Sec.6 [13]

<None>

Requirements within bridgedesign covering the basicprinciples and aims ofSOLAS V/15 and IMO MSC/Circ.982.



DNV AS

5 Cargo operationsTable 5 Additional class notations related to cargo operations


Bow loading

Mandatory:

yes


Pt.6 Ch.4 Sec.1


Pt.7 Ch.1 Sec.2

<None> Bow loading arrangement. Mandatory for Tanker foroil when installed.

CCO

Mandatory:

no


Pt.6 Ch.4 Sec.2


Pt.7 Ch.1 Sec.4

<None> Centralised cargo control forliquid cargoes.

For vessels with classnotation Tanker for oil orTanker for oil productsor Tanker for chemicals.

EL

Mandatory:

no


Pt.6 Ch.4 Sec.3


Pt.7 Ch.1 Sec.6 [27]

<None> Easy loading of cargo holds. Ore carrier.

ETC

Mandatory:

no


Pt.6 Ch.4 Sec.4


NA

<None> Effective tank cleaning.

MCDK

Mandatory:

no


Pt.6 Ch.4 Sec.5


Pt.7 Ch.1 Sec.2

<None> Movable car decks.



DNV AS


<None> Loading computer system.

Mandatory if a loadingcomputer calculatingstability and/or hullstrength is installed.

LCS

Mandatory:

yes


Pt.6 Ch.4 Sec.6


Pt.7 Ch.1 Sec.6 [19]

DC

Loading computer systemto assist the master as adecision aid under damageconditions.

Optional.

REGAS

Mandatory:

yes


Pt.6 Ch.4 Sec.7


Pt.7 Ch.1 Sec.6 [32]

<None> Regasification plant. Mandatory for vessels fittedwith regasification plant.

RCP

Mandatory:

no


Pt.6 Ch.4 Sec.8


Pt.7 Ch.1 Sec.6 [20]

X/Y

Refrigerated containerstowage positions, whereX represents total numberof certified refrigeratedstowage positions, andY is the percentage ofrefrigerated containerscarrying fruit/chilledcargoes. Y shall be at least20%.

RM

Mandatory:

no


Pt.6 Ch.4 Sec.9


Pt.7 Ch.1 Sec.6 [4]

X°C/Y°C sea

Cargo refrigeration plant,where X°C is lowestchamber temperature and Y°C sea maximum seawatertemperature.

RSCS+

Mandatory:

no


Pt.6 Ch.4 Sec.10


Pt.7 Ch.1 Sec.4

<None>

Route specific containerstowage on long haul as wellas costal voyages based onweather forecasts.



DNV AS


STL

Mandatory:

yes


Pt.6 Ch.4 Sec.1



<None> Submerged turret loadingsystem. Mandatory when installed.

1

Systems for control ofvapour emission from cargotanks and in compliance withIMO MSC/Circ. 585.

2

Systems for control ofvapour emission from cargotanks and in compliancewith IMO MSC/Circ. 585 andUSCG CFR 46 Part 39.

3

Systems for onboard vapourprocessing with a minimumrecovery rate of 78% of non-methane VOC.

For vessels with classnotation Tanker for oil orTanker for oil productsor Tanker for chemicals

B Additional requirements tovapour balancing.

For vessels with classnotation VCS(1) orVCS(2).

VCS

Mandatory:

no


Pt.6 Ch.4 Sec.11


Pt.7 Ch.1 Sec.6 [15]

L, X%

For installations used onladen voyages only, witha recovery rate of X% ofNMVOC.

For vessels with classnotation Tanker for oil orTanker for oil productsor Tanker for chemicals

May be combined withVCS(3).

<None>Carriage of fruits andvegetables under controlledatmosphere.

CA

Mandatory:

no


Pt.6 Ch.4 Sec.12


Pt.7 Ch.1 Sec.6 [4]

port.

Carriage of fruits andvegetables under controlledatmosphere, using aportable device.



DNV AS


C

Designates the coverageof the washing machinesin %. The coverage shallnot be less than 80%. Theinserted value shall be basedon the tank with the lowestcoverage.

S

Designates the strippingefficiency. I.e. the amount ofresidue left in a cargo tankand associated piping afterdischarge and stripping inm3. The amount shall notexceed 3 m3 per cargo tank.The inserted value shall bebased on the test resultsfor the tank with the loweststripping efficiency.

ITC

Mandatory:

no


Pt.6 Ch.4 Sec.13


NA

A

Designates the upwardfacing area of horizontalstructures and piping in m2

where cargo and sludge mayaccumulate. The insertedvalue shall be based onthe tank with the largesthorizontal area.

Tanker for oil

Tanker for oil products.

<None>

The unit is preparedfor future regasificationoperation and installationof a regasification plantonboard based on generalprinciples of regasificationplant design. generalprinciples of regasificationplant design.

C

The unit is preparedfor future regasificationoperation and installationof a regasification planton board with an selectedregasification plant design.

SC The unit has carried outsloshing calculations.

SREquipped with cargocontainment system ofreinforced configuration.

IP Increased pressure for cargotanks for REGAS operation.

REGAS ready

Mandatory:

No


Pt.6 Ch.4 Sec.14


NA

ES Enhanced safety review.

Gas carriers plannedand partly prepared forlater installation of aregasification plant incompliance with classnotation REGAS orREGAS(ES).



DNV AS


Ready for C

Mandatory:

No


Pt.6 Ch.4 Sec.15


NA

<None>

Vessels, which duringthe newbuilding phaseare planned for, andpartly prepared for, laterconversion to transport of anew product.

C denotes the new productgiven in Pt.5 Ch.7 Sec.19Table 2.



DNV AS

6 Equipment and design featuresTable 6 Additional class notations related to equipment and design features


Container

Mandatory:

no


Pt.6 Ch.5 Sec.1



<None> Equipped for carriage ofcontainers.

For vessels other thanContainer ship.

Hatchcoverless

Mandatory:

yes


Pt.6 Ch.5 Sec.2


Pt.7 Ch.1 Sec.2

<None>

For hatchcoverless containerships, multi-purpose drycargo ships and generalcargo ships equipped withthe appropriate facilities tooperate without or with openhatch covers.

Mandatory for vessels withclass notation Containership, General dry cargoship or Multi-purpose drycargo ship intended foroperating without or withopen hatch covers.

Crane

Mandatory:

no


Pt.6 Ch.5 Sec.3


Pt.7 Ch.1 Sec.6 [6]

<None> Onboard crane. Onboard crane certified bythe Society.

A Additional fire protection inaccommodation area.

C Additional fire protection incargo area.

M Additional fire protection formachinery spaces - general.

F

Mandatory:

no


Pt.6 Ch.5 Sec.4


Pt.7 Ch.1 Sec.6 [11]

M-PAdditional measures formachinery spaces - fireprevention.



DNV AS


A Additional fire protection inaccommodation area.

C Additional fire protection incargo area.

M Additional fire protection formachinery spaces - general.

M-PAdditional measures formachinery spaces - fireprevention.

Ships with the classnotation Container ship.

HAHazard identificationassessment of containerfires.

Ships with the classnotation Container shipand at least one of thequalifiers FD, FD+, FF orHF.

FDEnhanced fire detectionsystems for container cargoareas.

FD+

Enhanced fire detectionsystems, with containeridentification, for containercargo areas.

FFEnhanced fire fightingsystems for container cargoareas.

FCS

Mandatory:

no




Pt.7 Ch.1 Sec.6 [11]

HFFire fighting by containerhold flooding for containercargo areas.

Ships with the classnotation Container shipand the notation FCS(C).

<None> Helicopter deck.

S Additional requirements tovessel safety.

H Additional requirements tohelicopter safety.

F Additional requirements tohelicopter facility.

HELDK

Mandatory:

no


Pt.6 Ch.5 Sec.5


Pt.7 Ch.1 Sec.6 [8]

CAA-N

Helicopter facility has beenevaluated for additionalrequirements specified bythe Norwegian Civil AviationAuthorities.



DNV AS


SF

Mandatory:

no


Pt.6 Ch.5 Sec.6


NA

<None>Compliance withrequirements to damagestability.

Offshore service vessel

SPS

Mandatory:

no


Pt.6 Ch.5 Sec.7


Pt.7 Ch.1 Sec.6 [26]

<None>

Ships carrying specialpersonnel who are neithercrew members norpassengers.

Inert

Mandatory:

yes


Pt.6 Ch.5 Sec.8



<None> Inert gas system.Mandatory if installed onTanker for oil DWT < 8000 ton.

1Designed for carriage ofliquid with flashpoint lowerthan 60°C.

LFL

Mandatory:

yes


Pt.6 Ch.5 Sec.9



2Designed for carriage ofliquid with flashpoint lowerthan 43°C.

Mandatory for vesselsintended for transportationof liquids with flashpointbelow 60°C in bulk to andfrom offshore installationsexcept ship types Tankerfor oil and Tanker forchemicals.

B

Arranged for carriage of soliddangerous goods in bulkin compliance with SOLASReg.II-2/19.

DG

Mandatory:

no


Pt.6 Ch.5 Sec.10


Pt.7 Ch.1 Sec.6 [5]

P

Arranged for carriageof dangerous goods inpackaged form in compliancewith SOLAS Reg.II-2/19.



DNV AS


DBC

Mandatory:

no


Pt.6 Ch.5 Sec.10


Pt.7 Ch.1 Sec.6 [5]

<None>

Arranged for carriage ofsolid dangerous goods inbulk in compliance with thetechnical provisions of theIMSBC code.

OILREC

Mandatory:

no


Pt.6 Ch.5 Sec.11


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.4 and Pt.7 Ch.1 Sec.6 [3]

<None> Recovered oil reception andtransportation.

All ships except Tanker foroil.

OILREC FP> 60°C

Mandatory:

no


Pt.6 Ch.5 Sec.11


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.4 and Pt.7 Ch.1 Sec.6 [3]

<None>Recovered oil reception andtransportation for oil withflashpoint above 60°C.

All ships except Tanker foroil.

SPM

Mandatory:

yes


Pt.6 Ch.5 Sec.12


NA

<None> Single point mooring. Mandatory for Tanker foroil when installed.

DP Enhanced verification ofdynamic positioning.

TAM

Enhanced verification ofthruster assisted mooring orautomatic thruster assistedmooring systems.

PMS Enhanced verification ofpower management system.

ESV

Mandatory:

no


Pt.6 Ch.5 Sec.13


Pt.7 Ch.1 Sec.6 [28]

SPTEnhanced verification ofsteering, propulsion andthruster system.



DNV AS


ICSEnhanced verification ofintegrated control andmonitoring system.

DRILL Enhanced verification ofdrilling control system.

BOP Enhanced verification ofblow out prevention system.

Crane Enhanced verification ofcrane control system.

HIL-IS

“Hardware-In-the-Loop” (HIL) testing whereHIL test package is providedby independent HIL supplier.

HIL-DS

“Hardware-In-the-Loop” (HIL) testing whereHIL test program packageand HIL test package reportare provided by independentHIL supplier and HIL testsimulator package isprovided by the organizationdelivering the HIL targetsystem.

<None>

Equipped with dedicatedgas fuel transfer equipmentfor supply of bunker to gasfuelled ships on a regularbasis.

VR-x

Equipped for handling ofexcess vapour return fromthe receiving ship withvapour recovery capacity ofx kW.

EPC Equipped with enhancedpositioning control system.

Gas bunker

Mandatory:

no


Pt.6 Ch.5 Sec.14


Pt.7 Ch.1 Sec.6 [37]

TC Equipped with enhancedtransfer control system.

Tanker for liquefiedgas or Tanker for C andbarges specifically intendedfor carriage of liquefiedgas.

AA

Ship designed for carriageof either oil cargoes, liquidcarbon dioxide- and liquidnitrogen and/or dry mud-and cement.

P Ship designed for carriage ofpollution hazards cargoes.

Platform supply

Mandatory:

yes


Pt.6 Ch.5 Sec.15


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4 S Ship designed for carriage of

safety hazardous cargoes.

Mandatory for vesselsintended to carry cargoescovered by Pt.6 Ch.5Sec.15.



DNV AS


T Ship designed for carriage oftoxic cargoes.

<None>Vessel with permanentinstalled gangway where thegangway is certified by DNV.

Walk2work

Mandatory:

no


Pt.6 Ch.5 Sec.16


Pt.7 Ch.1 Sec.6 [33]

Operability

Denotes the maximum seaconditions in which theoffshore gangway systemmay be safely operated.

<None>

Vessel intended to havegangway system installedonboard. The gangway isoutside the scope of thenotation.

Walk2workready

Mandatory:

no


Pt.6 Ch.5 Sec.16


NAOperability

Denotes the maximum seaconditions in which theoffshore gangway systemmay be safely operated.

ADW

Mandatory:

no


Pt.6 Ch.5 Sec.17


NA

<None>Ships intended for anchoringin deep and unshelteredwater.

Cat1Ships strengthened forliquefaction in designcategory 1 group A cargo.

BCLIQ

Mandatory:

yes


Pt.6 Ch.5 Sec.18


NA

Cat2Ships strengthened forliquefaction in designcategory 2 group A cargo.

BCLIQ with one ofqualifiers, either Cat1 orCat2, is mandatory forships intended for thecarriage of solid bulk cargoshipped at a moisturecontent in excess of itstransportable moisture limitwhich may liquefy during avoyage.

RO/RO

Mandatory:

no


Pt.6 Ch.5 Sec.19


NA

<None>

Designed and arranged forroll-on and roll-of cargohandling and transportationof rolling vehicles.

For ships other than RO/RO ship and Car carrier.



DNV AS


<None>

Vessels arranged with a gasfired power plant for theproduction and export ofelectrical energy.

Performance

Additional performancerequirements related tothe rated electrical powerdelivered from the powerplant.

Optional qualifier for Gaspower plant.

PRated electrical power, P,[MW] delivered from thepower plant.

Optional qualifier whenPerformance is assigned.

VSupply voltage, V [kV]delivered from the powerplant.


Gas power plant

Mandatory:

yes


Pt.6 Ch.5 Sec.20


Pt.7 Ch.1 Sec.6 [34]

fSupply frequency, f, [Hz]delivered from the powerplant.


<None>

Initial level of cybersecurity based on IMOresolution MSC.428(98)and MSC-FAL.1/Circ.3.

EssentialEssential level of cybersecurity for the vessel'sessential systems.

AdvancedAdvanced level of cybersecurity for the vessel'sessential systems.

Cyber secure

Mandatory:

no


Pt.6 Ch.5 Sec.21


Pt.7 Ch.1 Sec.6 [36]

+

Establish barriers to prevent,mitigate and respond tocyber-attacks.

Selected level of cybersecurity for specifiedsystem(s).

OPH

Operations and maintenanceenhancements relatedto structural integritymanagement andperformance of hull andstructure.

Smart

Mandatory:

no


Pt.6 Ch.5 Sec.24


NA

OPM

Operations and maintenanceenhancements related tomaintenance managementof machinery andequipment, conditionmonitoring, systems andvessel performance.

Requires a minimum ofthree (3) enhancements foreach qualifier. One qualifieris required to obtain theclass notation Smart.



DNV AS


EEN

Energy efficiencyand environmentalenhancements related tofuel consumption, emissionand noise.



DNV AS

7 Cold climateTable 7 Additional class notations related to cold climate


1A*FHigh powered vessels forregular traffic in heavy Balticice.

Vessels constructedaccording to Finnish-Swedish ice rules.

1A*Vessels intended fornavigation in ice-infestedwaters.

Constructed according toFinnish- Swedish ice rules(1A Super). Ice thickness1.0 m.

1AVessels intended fornavigation in ice-infestedwaters.

Constructed according toFinnish- Swedish ice rules(1A). Ice thickness 0.8 m.

1BVessels intended fornavigation in ice-infestedwaters.

Constructed according toFinnish- Swedish ice rules(1B). Ice thickness 0.6 m.

1CVessels intended fornavigation in ice-infestedwaters.

Constructed according toFinnish- Swedish ice rules(1C). Ice thickness 0.4 m.

CVessels intended fornavigation in light iceconditions.

Ice

Mandatory:

no




NA

EVessels intended fornavigation in light localiseddrift ice.

C

Operation in ice free waterswithin polar waters.

Operation in open waterswithin polar waters.

Operation in ice conditionsless severe than thoseincluded in categories A andB within polar waters.

B

Operation in other iceconditions within polarwaters as listed in Pt.6 Ch.6Sec.5 Table 6.

Polar

Mandatory:

no


Pt.6 Ch.6 Sec.5


NA

A

Operation in other iceconditions within polarwaters as listed in Pt.6 Ch.6Sec.5 Table 6.



DNV AS


PST Polar service temperature,PST, in °C.

Mandatory when the shipis intended to operatein low air temperaturewhere mean daily lowtemperature (MDLT) isbelow -10°C.

1 Year-round operation in allpolar waters.

2Year-round operation inmoderate multi-year iceconditions.

3

Year-round operation insecond-year ice whichmay include multi-year iceinclusions.

4

Year-round operationin thick first-year icewhich may include old iceinclusions.

5

Year-round operation inmedium first-year icewhich may include old iceinclusions.

6

Summer/autumn operationin medium first-year icewhich may include old iceinclusions.

PC

Mandatory:

no


Pt.6 Ch.6 Sec.7


NA

7

Vessels intended fornavigation in ice-infestedpolar waters.

Summer/autumn operationin thin first-year icewhich may include old iceinclusions.

<None><< Occasional operation in coldclimate for short periods.

For ambient temperaturesdown to -20ºC.

Winterized

Mandatory:

no


Pt.6 Ch.6 Sec.4


Pt.7 Ch.1 Sec.6 [23]

BST

Regular operation in coldclimate for an extendedperiod of time whereBST is the Baltic servicetemperature in °C.

For ambient temperaturescolder than -20ºC.



DNV AS


DAT-B

Mandatory:

yes


Pt.6 Ch.6 Sec.6

FiS requirements:


Providing materialrequirements for vesselsintended to operate in lowair temperatures duringwinter in the northern BalticSea, or in areas with similarconditions. t denotes thelowest mean daily averageair temperature in °C.

Mandatory for vesselsintended to operatein areas with low airtemperatures, i.e. designtemperatures colder than-10°C.

DAT

Mandatory:

yes


Pt.6 Ch.6 Sec.6


NA

t

Providing materialrequirements for vesselsintended to operate in lowair temperatures in polarwaters. t denotes the lowestmean daily average airtemperature in °C.

Mandatory for vesselsintended to operate inpolar waters with low airtemperatures, i.e. designtemperatures colder than-10°C.

PC(1) Year-round operation in allpolar waters.

PC(2)Year-round operation inmoderate multi-year iceconditions.

PC(3)

Year-round operation insecond-year ice whichmay include multi-year iceinclusions.

PC(4)

Year-round operationin thick first-year icewhich may include old iceinclusions.

PC(5)

Year-round operation inmedium first-year icewhich may include old iceinclusions.

PC(6)

Summer/autumn operationin medium first-year icewhich may include old iceinclusions.

PC(7)

Summer/autumn operationin thin first-year icewhich may include old iceinclusions.

DAV

Mandatory:

no


Pt.6 Ch.6 Sec.8


NA

Ice(1A*)

For vessels intended tooperate with stern first in iceinfested polar waters.

Normally capable ofnavigating in difficult iceconditions without theassistance of icebreakers.



DNV AS


Ice(1A)

Capable of navigating indifficult ice conditions,with the assistanceof icebreakers whennecessary.

Ice(1B)

Capable of navigating inmoderate ice conditions,with the assistanceof icebreakers whennecessary.

Ice(1C)

Capable of navigatingin light ice conditions,with the assistanceof icebreakers whennecessary.

Icebreaker

For vessels intended tooperate as icebreaker withstern first in ice infestedpolar waters.

Ice management andescort services.



DNV AS

8 Environmental protection and pollution controlTable 8 Additional class notations related to environmental protection and pollution control


E[m] Ballast water exchange.

m denotes method ofexchange as follows:

s - sequential method.

f - flow-through method.

d - dilution method.

BWM

Mandatory:

no


Pt.6 Ch.7 Sec.1


Pt.7 Ch.1 Sec.6 [21]T Ballast water treatment.

<None>Arrangements for controllingand limiting operationalemissions and discharges.

Design

Additional designrequirements for protectionagainst accidents and forlimiting their consequences.

Clean

Mandatory:

no


Pt.6 Ch.7 Sec.2


Pt.7 Ch.1 Sec.6 [16]

Tier III

Compliance with the NOxemission requirements ofTier III according to MARPOLAnnex VI, Regulation 13.

SOx-ADesigned to operate allmachinery on marinedistillate fuel.

ECA

Mandatory:

no


Pt.6 Ch.7 Sec.3


NA

SOx-P

Designed to operatemachinery componentsused while in port on marinedistillate fuel.

Fuel and lubrication oilsystem and arrangementsfor meeting regulations inemission control areas.

<None>Installations for thereduction of NOx or SOxemissions by novel means.

Applicable for emissionreduction system forNOx and/or SOx by novelmeans which does not fallunder any of the definedadditional qualifiers. Suchsystems shall generallycomply with the principlesof these rules.

Additional qualifiers for NOx reduction systems.

ER

Mandatory:

yes


Pt.6 Ch.7 Sec.7

FIS requirements:


SCR

Installations for thereduction of NOx emissionsby selective catalyticreduction systems.

Applicable for all vesselswhere SCR systems areinstalled in one or moreexhaust lines.



DNV AS


EGRInstallations for thereduction of NOx emission byrecirculation of exhaust gas.

Applicable for all vesselswhere EGR systems areinstalled in one or moreexhaust lines.

TIER III

Installations for thereduction of NOx emissionscertified in compliancewith the NOx emissionrequirements of Tier IIIaccording to MARPOL AnnexVI, regulation 13.

Additional qualifiers for SOx reduction systems

EGCS open

Installations for removalof SOx by use of seawaterspray without means forrecirculation (open loopscrubber system).

Applicable for all vesselswhere open loop scrubbersystems are installed.

EGCS closed

Installations for removal ofSOx by use of water spray ina closed circulation system(closed loop system).

Applicable for all vesselswhere closed loop scrubbersystems are installed.

EGCS hybrid

Installations for removalof SOx by use of sea- orfreshwater spray in open orclosed circulation (open andclosed loop system).

Applicable for all vesselswhere any configuration ofhybrid scrubber systemsare installed.

EGCS dry

Installations for removal ofSOx by use of a dry mediumthrough which the exhauststream is passed.

Applicable for all vesselswhere dry scrubbersystems are installed.

Optional additional qualifiers

Enhanced Installations with enhancedavailability.

Additional qualifier definingemission reduction systemsas a system supportingthe main functions of thevessel according to Pt.4Ch.1.

Zero Discharge (x)Installations for removalof SOx with holding tankcapacity for (x) days.

Additional qualifier forclosed and hybrid exhaustgas cleaning (EGC) systemswith holding tank designedfor 100% EGC system loadfor (x) days.



DNV AS


Recyclable

Mandatory:

no


Pt.6 Ch.7 Sec.4


Pt.7 Ch.1 Sec.6 [30]

<None> Inventory of hazardousmaterials.

Shore power

Mandatory:

yes


Pt.6 Ch.7 Sec.5


NA

<None> Electric shore connections.

Mandatory for the followinginstallations:

— vessels with HV shoreconnection

— vessels with LV shoreconnection of a powerrating greater than orequal to 1 MVA.

A Vessels using acousticalequipment.

S Vessels conducting seismicsurveys.

F Fishing vessel.

R Research vessel.

Silent

Mandatory:

no


Pt.6 Ch.7 Sec.6


NA

E

Vessels complying withspecified maximumunderwater noise emission.

Vessels demonstrating acontrolled environmentalnoise emission.

I-qrnExternal airborne noiseemission during idlecondition while berthed.

Quiet

Mandatory:

no


Pt.6 Ch.7 Sec.8


NA

W-qrn

Requirements related toexternal airborne noiseemission of vessels in port. External airborne noise

emission during workingcondition while berthed.



DNV AS

9 Living and working conditionsTable 9 Additional class notations related to living and working conditions


C-crn Habitability requirements toindoor climate. All vessel types.

V-crnHabitability requirementsto noise and whole-bodyvibration.

All vessel types exceptyachts and naval vessels.

Y-SHabitability requirementsto noise and whole-bodyvibration.

Yachts and superyachts.

Y-MHabitability requirementsto noise and whole-bodyvibration.

Megayachts.

COMF

Mandatory:

no


Pt.6 Ch.8 Sec.1


NA

NAVHabitability requirementsto noise and whole-bodyvibration.

Naval vessels.

VIBR

Mandatory:

no


Pt.6 Ch.8 Sec.2


NA

<None> Limitations to vibrationlevels.

SAFELASH

Mandatory:

no


Pt.6 Ch.8 Sec.3


NA

<None>

Increased safety levelfor crew members andstevedores engaged in thehandling and securing ofcontainers.

Container ships andvessels assigned theadditional class notationContainer.



DNV AS

10 Survey arrangementsTable 10 Additional class notations related to survey arrangement


BIS

Mandatory:

no


Pt.6 Ch.9 Sec.1


Pt.7 Ch.1 Sec.5 [1.6]

<None>Built for in-water surveyof the vessel bottom andrelated items.

ESP

Mandatory:

yes


Pt.6 Ch.9 Sec.2



<None>Vessels subject toan enhanced surveyprogramme.

Mandatory for vessels withclass notations:

Bulk carrier

Tanker for oil

Bulk carrier or tanker foroil

and

Tanker for chemicals

Tanker for C

having integral tanksintended for carriage ofliquid chemicals in bulk inaccordance with the IBCcode.

An Sensor monitoringacceleration along one axis.

B

Statistical back-up andtrigged time series tobe sent annually to theSociety.

C

Online link to loadingcomputer which iscontinuously updating theloading condition.

HMON

Mandatory:

no


Pt.6 Ch.9 Sec.3


Pt.7 Ch.1 Sec.6 [14]

D

Hull monitoring at variouslocations to reduce the needfor internal survey throughincreased focus on hullstress warnings. n denotesnumber of sensors. Online data link between

hull monitoring system onboard to office ashore. Thelink shall make it possibleto operate the systemfrom an onshore computer,perform maintenance andtransfer data.



DNV AS


EnSensor monitoring thepropulsion shaft(s) output/rpm.

Gn Sensor monitoring globalhull strain.

HnSensor monitoring theliquid motion pressures intanks (sloshing).

In Sensors for ice thicknessmeasurement.

IRM Ice response monitoring,further described by Ln.

Ln Sensor monitoring local hullstrain.

MDevice for monitoring ofhull rigid body motions (sixdegrees of freedom).

Nn Sensor to measure noise.

On

Navigation sensors(position fixing system(e.g. GPS), speed log, gyrocompass, rudder angle,etc.).

Pn Sensor monitoring the seapressure acting on the hull.

PRParametric roll sensorsbased on roll and pitchbased on Mn.

Rn Rudder responsemonitoring.

S Device for monitoring thesea-state.

Tn Sensor monitoring thetemperature.

VnVelocimeter: sensormonitoring velocity alongone axis or about an axis.

VDVnFree axial sensors forestimation of vibration dosevalue.

Wn Wind sensor for wind speedand wind heading.



DNV AS


Oil lubricated Oil lubricated tail-shaftstern tube bearing.

Closed loop waterWater lubricated tail shaftstern tube bearing withclosed loop.

TMON

Mandatory:

no


Pt.6 Ch.9 Sec.4


Pt.7 Ch.1 Sec.6 [17] Open loop water

Tail shaft monitoring enablesoperators to continuouslyobserve and assess thecondition of the shaft(s)which may extend intervalbetween tail shaft surveys/tail shaft withdrawal.

Water lubricated tail shaftstern tube bearing withopen loop.

<None>

Boiler monitoring reducesthe need for internal surveyat every alternate surveythrough increased focus onwater management.

BMON

Mandatory:

no


Pt.6 Ch.9 Sec.5


Pt.7 Ch.1 Sec.6 [25]+ Automation of boiler feed

water testing and treatment.

CMON

Mandatory:

no


Pt.6 Ch.9 Sec.6


Pt.7 Ch.1 Sec.4

<None> Construction monitoring ofhull critical locations.

UWILD

Mandatory:

no


Pt.6 Ch.9 Sec.7


Pt.7 Ch.1 Sec.5 [1.5] and Pt.7Ch.1 Sec.5 [1.8]

<None> Underwater inspection in lieuof drydocking.

For permanently mooredvessels.

<None>Extended and flexiblescheduling of internal cargotank(s) survey.

ASP

Mandatory:

no


Pt.6 Ch.9 Sec.8


Pt.7 Ch.1 Sec.6 [35]

MRU Motions reference unitinstalled.

Liquefied gas storage units(e.g. FSU and FSRU).



DNV AS


<None>

Prepared for extendedand flexible schedulingof internal cargo tank(s)survey.

ASP ready

Mandatory:

no


Pt.6 Ch.9 Sec.8


NA

MRU Motions reference unit(MRU) installed.

Liquefied gas storage units(e.g. FSU and FSRU).



DNV AS

11 NavalTable 11 Additional class notations related to naval vessels


NAUT

Mandatory:

no


Pt.6 Ch.10 Sec.1


DNV-RU-NAV Pt.7 Ch.1 Sec.6[4]

Navy

Basic requirements tobridge design, bridgeinstrumentation, andworkstation arrangement.

All naval flagged vesselsand administeredby a national navaladministration, except:

— vessel of less than 24metres LOA

— submarines.

<None> Naval operations and navalsupport operations.

HullNaval requirements forarrangements, loads and hullstrength.

STAB Naval requirements forstability.

SystemNaval requirements forpiping, machinery, electrical,control and monitoring.

Fire Naval requirements for firesafety.

EVAC Naval requirements for safeevacuation.

RADHAZ Naval requirements forradiation hazards.

EMCNaval requirementsfor electromagneticcompatibility.

Naval support

Mandatory:

yes


Pt.5 Ch.13 Sec.3



SAMNaval requirementsfor storage rooms forammunition.

Naval flagged vessels andadministered by a nationalnaval administration.

11.1 General

11.1.1 The class notation Naval support may be combined with ship type notations in Pt.5.

11.1.2 The qualifiers to Naval support are optional.

11.1.3 Any combination of qualifiers for Naval support are allowed. For example Naval support(Hull,STAB, Fire).



DNV AS

12 Digital featuresTable 12 Additional class notations related to digital features


P

A proprietary data collectioninfrastructure to facilitatethe collection and exchangeof data.

Based on customisedrequirements defined by aspecific data collection usecase.

D-INF

Mandatory:

no


Pt.6 Ch.11 Sec.1


Pt.7 Ch.1 Sec.6 [38]

S

A standardised datacollection infrastructure tofacilitate the collection andexchange of data.

Based on standardisedrequirements defined by aspecific standard.

AVA

Fleet in service verificationof specified target systemscan (partly or fully) bebased on data-drivenverification by applicationof an algorithm-basedverification agent (AVA).

BITE

Fleet in service verificationof specified target systemscan (partly or fully) be basedon data-driven verificationby application of built in testequipment.

DSA

Fleet in service verificationof specified target systemscan (partly or fully) be basedon data-driven verificationby application of digitalsurvey applications.

DT

Fleet in service verificationof specified target systemscan (partly or fully) be basedon data-driven verificationby application of digitaltwins.

DDV

Mandatory:

no


Pt.6 Ch.11 Sec.2


Pt.7 Ch.1 Sec.6 [39]

SVS

Fleet in service verificationof specified target systemscan (partly or fully) bebased on data-drivenverification by application oftarget system self verifyingfunctionality.



DNV AS


<None>

Onboard arrangementfor live streaming ofactivities at bridge, deck,accommodation, enginespaces, and control rooms.The coverage may alsoinclude specified confinedspaces, like tanks andboilers.

HMI1

Including arrangementfor online sharing ofonboard target systemsscreens/views, to a remotewitnessing centre.

REW

Mandatory:

no


Pt.6 Ch.11 Sec.3


NA

HMI2

Connectivity, tools andinfrastructure enablingdirect online witnessingfrom a remote location.

Including arrangement foronline sharing and access toonboard target systems HMIfrom a remote witnessingcentre to enable remotecontrol of the target systemHMI interface.



DNV AS

SECTION 5 SERVICE AREA

1 Service area notation

1.1 General

1.1.1 The service area notation R followed by a number or a letter will be assigned to vessels with modifiedrequirements to arrangement, equipment or scantlings, in relation to vessels built for unrestricted trade.The service area restrictions, given in nautical miles and representing the maximum distance from nearestport or safe anchorage, are given in Table 1 of this section. For the various service area notations therestrictions are related to the zones, areas and seasonal periods as defined in the International Conventionon Load Lines, 1966, Annex II.The service area notation RE is limited to enclosed waters such as fjords, ports, rivers and lakes.The service area restrictions as related to the assigned service area notation will be included in the appendixto the class certificate.

Table 1 Service area restrictions

Seasonal zones (nautical miles)Service areanotations Winter Summer Tropical

Correspondingsignificant wave

height HS 1) in meters

R0 250 No restrictions No restrictions Not applicable

R1 100 200 300 0.9Cw

R2 50 100 200 0.8Cw

R3 20 50 100 0.6Cw

R4 5 10 20 0.5Cw

RE Enclosed waters 0.4Cw

1) Cw is the wave coefficient as defined in Pt.3 Ch.4 Sec.4. The significant wave height (HS) assumes reduced speed inhead sea and that heading is changed when necessary to avoid resonance and extreme rolling.

1.1.2 Modified requirements related to the various service area notations are given in the relevant sectionsof the rules. The modifications may affect:

— design hull girder loads— design pressures on shell, weather decks, superstructures and deckhouses— anchoring and mooring equipment— stability.

1.1.3 The flag administration, the domestic requirements of which are being applied under the provision ofCh.1 Sec.2 [1.3.5] (local trade), shall be indicated in parentheses after the service area notation, by usinglower-case country codes in accordance with ISO 3166, R2(nor), should the flag administration be Norwayor R2(usa) should the flag administration be U.S.A. etc.1.1.5 Other service restrictions or operational limits included in the design assumptions for a vessel will bestated in the appendix to the class certificate and/or on special signboards.



DNV AS

SECTION 6 DESCRIPTIVE NOTATION

1 General

1.1 For a vessel with purpose, function or feature not covered by existing notations, this may be recognized byassignment of a descriptive notation.

1.2 The descriptive notation may be assigned upon request to the Society.

1.3 There are no class requirements associated with a descriptive notation.

1.4 The descriptive notation will be identified by use of square brackets, e.g. [Research vessel].



DNV AS

CHANGES – HISTORIC

July 2020 edition

Amendments October 2020, entering into force 1 January 2021Topic Reference Description

New class notations Sec.4 The following notations are new:

— Smart— D-INF— DDV— REW

New qualifiers Sec.4 The following qualifiers are new:

— Cyber secure(Essential)— Cyber secure(Advanced)— Cyber secure(+)

Changes July 2020, entering into force 1 January 2021Topic Reference Description

New class notations Sec.4 The following notations are new:

— HDS— OILREC FP>60°C— FCS— DAT-B

New qualifiers Sec.3, Sec.4 The following qualifiers are new:

— BMON(+)— Pontoon(B)— COAT-PSPC(CA)— DAV(Icebreaker)

Removed class notation Sec.4 The following class notation has been removed:

— HLP

Part 1 Chapter 2 Changes – historic


DNV AS

July 2019 edition


New class notations Sec.3 and Sec.4 The following notations are new:

— FSU for liquefied gas— FSU for C— Walk2workready— NAABSA— SRTP— REGAS ready— Gas fuelled LPG— ITC— WAPS— Platform supply— Polar— DAV— Quiet— ASP— ASP ready

New qualifiers The following qualifiers are new

— RSD(NAS, X)— VCS(L, X)— NAUT(INS+)— Winterized(BST)

Deleted class notation Sec.4 The following class notation is deleted:

— CHEM

Deleted qualifiers Sec.3 and Sec.4 The following qualifiers are deleted:

— Offshore service vessel(Supply)— Winterized(Basic, Cold, Polar)— NAUT(ICS)

July 2018 edition


Update of name and qualifiersof a ship type notation forvessels for special operations

Sec.3 [11] Diving support vessel class notation is changed to DSV. Newqualifiers Ready and OCS are introduced.

Cyber security Sec.4 [6] Introducing new additional class notation Cyber secure relatedto mitigation of cyber risks.



DNV AS


New class notation for SOxand NOx cleaning systems(Scrubbers and selectivecatalytic reduction systems(SCR))

Sec.4 [8] New additional class notation ER (emission reduction) relatedto environmental protection and pollution control.

Survey requirements forfleet in service (FiS) for classnotation Walk2work

Sec.4 [4] Added reference to requirements for fleet in service.

Maintenance of rules for orecarriers

Sec.4 Table 1 The additional class notation Holds n may be empty isremoved for ships with the additional class notation OC(M) .

Underwater inspection in lieuof dry docking

Sec.4 Table 10 New additional class notation UWILD for permanently mooredvessels is introduced.

Revision of requirements fornotation REGAS

Sec.4 Table 5 New qualifier ES (enhanced safety) for the REGAS classnotation is introduced, focusing on enhanced safety features.

Revision of individual routecalculation

Sec.4 Table 5 Updated and enhanced additional class notation RSCS+ forroute specific container stowage on long haul as well as costalvoyages based on weather forecasts. The sign + is added todifferentiate the enhanced notation.

January 2018 edition

Changes January 2018, entering into force 1 July 2018Topic Reference Description

Sec.1 [1.1.1] Descriptive notation added to list of content of class notationstring.

Implementation of newdescriptive notation

Sec.6 [1.1] to Sec.6[1.4]

New requirements offering the option of assigning a descriptivenotation to a vessel.

New ship type notation -Tanker for potable water

Sec.3 Table 10 For vessels intended to carry potable water in bulk.

New additional class notation -RO/RO

Sec.4 Table 6 Designed and arranged for roll-on and roll-of cargo handlingand transportation of rolling vehicles.

New additional class notation -Gas power plant

Sec.4 Table 6 For vessels arranged with a gas fired power plant for theproduction and export of electrical energy.

New additional class notation -ADW

Sec.4 Table 6 For anchoring in deep and unsheltered water.

New additional class notation -BCLIQ

Sec.4 Table 6 For vessel intended to carry solid bulk cargo that may liquefyduring a voyage if shipped at a moisture level exceeding thetransportable moisture limit of the cargo.

New additional class notation -RO/RO

Sec.4 Table 6 Designed and arranged for roll-on and roll-of cargo handlingand transportation of rolling vehicles.



DNV AS


New additional class notation -Shaft align

Sec.4 Table 3 For enhanced design, installation and operating margins of thepropulsion shaft bearings beyond the main class requirementsfor shaft alignment.

July 2017 edition


Sec.5 Table 1 Inserted column with corresponding limiting significant waveheight Hs for each R notation.

Notations for Service arearestrictions (R notations)and corresponding limitingsignificant wave height, Hs Sec.5 Table 1 Inserted footnote related to operational assumptions.

Clarification of requirements forship type and additional classnotations

Sec.2 [2.1.1] Inserted text clarifying that requirements for ship typeand additional class notations may superseed main classrequirements.

Correct reference Sec.3 Table 10 Inserted correct reference to Fleet in Service requirements.

Update Table 10 according toPt.5 Ch.10 Sec.11

Sec.3 Table 10 Inserted class notation Escort tug with new qualifiers.


Sec.4 Table 10 Inserted four new qualifiers according to the introduction in therules.


Sec.4 Table 10 Inserted new class notation CMON.


Main changes January 2017, entering into force 1 July 2017

• Sec.3 - Ship type notations— Sec.3 Table 5: added class notation Barge for oil products with flashpoint above 60°C— Sec.3 Table 5: added class notation Barge for asphalt/bitumen— Sec.3 Table 6: added application for class notation Tanker for chemicals with flashpoint above 60°C— Sec.3 Table 6: added class notation Barge for chemicals with flashpoint above 60°C

• Sec.4 - Additional class notations— Sec.4 Table 6: added class notation Walk2work



DNV AS

July 2016 edition

Main changes July 2016, entering into force 1 January 2017

• Sec.3 Ship type notations— Sec.3 Table 5: Added class notation Barge for oil.— Sec.3 Table 5: Added class notation Barge for oil products.— Sec.3 Table 6: Added class notation Barge for chemicals.— Sec.3 Table 6: Added class notation Barge for C.— Sec.3 Table 7: Added class notation Tanker for c.— Sec.3 Table 7: Added class notation Barge for liquefied gas.— Sec.3 Table 7: Added class notation Barge for c.— Sec.3 Table 10: Added class notation Slop Reception Vessel.— Sec.3 Table 10: Added class notation Reefer.— Sec.3 Table 10: Added class notation Refrigerated fruit juice carrier.

• Sec.4 Additional class notations— Sec.4 Table 5: Class notation REGAS changed from optional to mandatory.— Sec.4 Table 5: Additional class notation CA.


Main changes January 2016, entering into force 1 July 2016

• Sec.3 Ship type notations— Table 5: Added class notations:

— Tanker for oil products with flashpoint above 60°C— Tanker for asphalt/bitumen.

— Table 6: Added class notation Tanker for chemicals with flashpoint above 60°C.

• Sec.4 Additional class notations— Table 1: Added class notations:

— Hot— Block loading.

— Table 3: Added class notation Scrubber ready

— Table 6: Added class notation CHEM

— Table 10: Added qualifiers for class notation TMON:

— Closed loop water— Open loop water.



DNV AS

October 2015 editionThis is a new document.The rules enter into force 1 January 2016.



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